20012022021001 has 2 divisors, whose sum is σ = 20012022021002. Its totient is φ = 20012022021000.

The previous prime is 20012022020989. The next prime is 20012022021083. The reversal of 20012022021001 is 10012022021002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14345527427401 + 5666494593600 = 3787549^2 + 2380440^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012022021001 - 2⁹ = 20012022020489 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012022081001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006011010500 + 10006011010501.

It is an arithmetic number, because the mean of its divisors is an integer number (10006011010501).

Almost surely, 2^{20012022021001} is an apocalyptic number.

It is an amenable number.

20012022021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012022021001 is an equidigital number, since it uses as much as digits as its factorization.

20012022021001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20012022021001 its reverse (10012022021002), we get a palindrome (30024044042003).

Subtracting from 20012022021001 its reverse (10012022021002), we obtain a palindrome (9999999999999).

The spelling of 20012022021001 in words is "twenty trillion, twelve billion, twenty-two million, twenty-one thousand, one".